-
Application
- Aerospace & Aviation
- Low-Voltage Electrical (Electric Brush Wires）
- Chemical & Metallurgical Engineering Equipment
- Industrial Machinery & Equipment Clusters
- Superconducting Technology Applications
- Rail Transit Equipment
- Smart Grid & Power Transmission/Distribution Applications
- New Energy Wind Power
- Power Storage Equipment
- New Energy Vehicle Systems
- Products
High-Quality Hard Drawn Copper Stranded Wires from China Suppliers & Factory for Electrical Applications
Technical Data
Annealed Cu-ETP wires, C11000, copper content ≥ 99.95%
Bare, Tin Plating
1.70mm - 2.85mm
16mm² - 400mm²
In rolls, on spools or wooden drums
Product Display
Model And Meaning
Customization Upon Request
| Part No. | Nominal Cross Section (mm²) | Measured Cross Section (Wires) (mm²) | Wire Structure Strands×Wire Number Per Strand×Layers/Single Wire Diameter (mm) |
Outer Diameter Approx. (mm) | Weight Approx. (kg/km) |
|---|---|---|---|---|---|
| BGJT(X)-16 | 16 | 1.159 | 7/1.70 | 5.10 | 143 |
| BGJT(X)-25 | 25 | 0.735 | 7/2.14 | 6.42 | 226 |
| BGJT(X)-35 | 35 | 0.528 | 7/2.52 | 7.56 | 314 |
| BGJT(X)-50 | 50 | 0.371 | 7/3.00 | 9.00 | 445 |
| BGJT(X)-70 | 70 | 0.263 | 19/2.14 | 10.70 | 618 |
| BGJT(X)-95 | 95 | 0.197 | 19/2.52 | 12.60 | 852 |
| BGJT(X)-120 | 120 | 0.154 | 19/2.80 | 14.00 | 1057 |
| BGJT(X)-150 | 150 | 0.121 | 19/3.15 | 15.75 | 1339 |
| BGJT(X)-185 | 185 | 0.100 | 37/2.52 | 17.64 | 1660 |
| BGJT(X)-240 | 240 | 0.077 | 37/2.85 | 19.95 | 2123 |
| BGJT(X)-300 | 300 | 0.064 | 37/3.15 | 21.70 | 2594 |
| BGJT(X)-400 | 400 | 0.062 | 61/2.85 | 25.65 | 3502 |
Advantages
High Breaking Load
Manufactured with larger single wire diameters (1.70–2.85mm), providing significantly higher breaking load than fine-strand wires. Fully compliant with TB/T3111-2005, suitable for electrified railway catenary messenger wires, droppers, and long-span overhead lines.
High Tensile Strength
Hard-drawing process ensures exceptional mechanical strength meeting strict railway standards.
Excellent Conductivity
Copper content ≥99.95% ensures conductivity ≥97% IACS, substantially reducing line transmission losses.
Corrosion Resistance Option
Tin-plated finish effectively resists sulfurization and humid corrosion, extending overall service life.
Customizable
Cross section, single wire diameter, plating options, and packing can be tailored to exact customer needs.
Operating Conditions
Temperature Range: –40°C to +90°C (tin-plated)
Typical Applications: Electrified railway catenary systems, overhead transmission lines, substation busbars, grounding grids, high-current industrial connections, electric furnace and switchgear leads.
Standard Compliance: Meets all mechanical and electrical requirements of TB/T3111-2005.
Precautions: Avoid direct burial in strong acid/alkali soil or prolonged water immersion for bare copper; tin-plated type withstands mildly corrosive environments.
Maintenance
• Regularly inspect for oxidation, broken strands, or mechanical damage, especially at termination points.
• For outdoor or railway use, perform cleaning and tightening checks every 12 months.
• Avoid scratching tin coating; apply anti-oxidation grease on bare copper if needed.
• Store in dry, ventilated warehouse away from acids, alkalis, salts, and damp floors.
After-Sales & Customization
Free technical support, custom orders, 24-hour response. Contact Zhejiang Bridgold Copper Tech Co., Ltd.
Zhejiang Bridgold Copper Tech Co., Ltd. is a professional leader China copper braid flat, copper braid wire, copper braid wire flat, copper braided wire, copper earth braid manufacturers and suppliers with high quality and low price. Welcome to contact us.
Frequently Asked Questions
The conductors are made of high-purity Cu-ETP (C11000) with a copper content ≥ 99.95%, guaranteeing electrical conductivity ≥ 97% IACS and robust mechanical performance.
They are widely applied in electrified railway catenary messenger systems, droppers, overhead power transmission lines, grounding grids, substation busbars, and high-current industrial switchgear connections.
Bare copper provides optimal conductivity for standard environments. Tin-plated copper offers enhanced resistance against atmospheric corrosion, moisture, and sulfurization, which is ideal for harsh or humid outdoor operations.
Our products fully meet all physical, mechanical, and electrical performance requirements outlined under TB/T3111-2005 railway and power transmission specifications.
Yes. We provide complete customization covering cross-sectional areas (16mm² to 400mm²), single wire strand configurations, surface coatings, and packaging methods (spools, rolls, or wooden drums).